EN 14620-1:2024
(Main)Design and manufacture of site built, vertical, cylindrical, flat-bottomed tank systems for the storage of refrigerated, liquefied gases with operating temperatures between 0 °C and -196 °C - Part 1: General
Design and manufacture of site built, vertical, cylindrical, flat-bottomed tank systems for the storage of refrigerated, liquefied gases with operating temperatures between 0 °C and -196 °C - Part 1: General
This document is a specification for vertical, cylindrical tank systems, built on site, above ground and of which either the primary liquid container or the liquid tight barrier is made of steel. The secondary liquid container, if applicable, can be of steel or of concrete or a combination of both. A primary liquid container made of pre-stressed concrete is excluded from the scope of this document.
This document provides general requirements and specifies principles and application rules for the structural design of the tank system during construction, testing, commissioning, operation (accidental included), and decommissioning. This document applies to all tank system components attached to and located within the liquid, vapour, purge gas, membrane or membrane tank outer containers of the tank system. It does not address the requirements for ancillary equipment such as pumps, pumpwells, valves, instrumentation, external staircases and walkways, roof mounted platforms, external pipe supports, etc. The requirements for those components are covered by the relevant European Standards, structurally designed in accordance with Eurocodes where appropriate, and meeting applicable safety regulations.
This document also does not address tank system operating procedures unless specified for determination of the relevant resistance and protection criteria for the tank systems. It specifies minimum performance requirements for the tank system, tank system foundation and protection systems. From a process piping standpoint, the scope of this document is limited to the following boundaries:
a) the face of the first flange outside of the tank in bolted flanged connection;
b) the first threaded joint outside of the tank in threaded connection;
c) the first circumferential pipe welded joint outside of the tank in welding-end pipe connection, which does not have a flange.
This document is applicable to storage tank systems designed to store products, having an atmospheric boiling point below ambient temperature, in a dual phase, i.e. liquid and vapour. The equilibrium between liquid and vapour phases being maintained by cooling down the product to a temperature equal to, or just below, its atmospheric boiling point in combination with a slight overpressure in the storage tank system.
The maximum design pressure of the tank systems covered by this document is limited to 500 mbar. For higher pressures, reference can be made to EN 13445, Parts 1 to 5.
The operating range of the gases to be stored is between 0 °C and −196°C.
The tank systems covered by this document are used to store large volumes of hydrocarbon products, ammonia and other non-hydrocarbon gases with low temperature boiling points, generally called “Refrigerated Liquefied Gases” (RLGs). Typical products stored in the tank systems are: methane, ethane, propane, butane, ethylene, propylene, butadiene (this range includes the Liquefied Natural Gas (LNG’s) and Liquefied Petroleum Gas (LPG’s)), ammonia, nitrogen, oxygen and argon.
NOTE 1 Properties of the gases are given in Annex A.
The requirements of this document cannot cover all details of design and construction because of the variety of sizes and configurations that may be employed. Where complete requirements for a specific design are not provided, the intention is for the designer, subject to approval of the purchaser's authorized representative and of the regulatory body, to provide design and details that are as safe as those laid out in this document.
EN 14620 consists of multiple parts. This document specifies general requirements for the tank system concept, selection and general design considerations.
In case of a conflict between general requirements of this document and the requirements in other parts of EN 14620 related to a specific liquefied gas, the product-specific requirements set forth in the other parts prevail.
Auslegung und Herstellung standortgefertigter, stehender, zylindrischer Flachboden-Tanksysteme für die Lagerung von tiefkalt verflüssigten Gasen bei Betriebstemperaturen zwischen 0 °C und -196 °C - Teil 1: Allgemeines
Dieses Dokument behandelt stehende, zylindrische, standortgefertigte, oberirdische Tanksysteme, bei denen entweder der zur Aufnahme der Flüssigkeit vorgesehene Primärbehälter oder die flüssigkeitsdichte Sperre aus Stahl besteht. Der Sekundärbehälter, falls vorhanden, kann aus Stahl oder Beton, oder aus einer Kombination von beiden bestehen. Primärbehälter, die aus Spannbeton hergestellt werden, fallen nicht in den Anwendungsbereich dieses Dokuments.
Dieses Dokument enthält allgemeine Anforderungen und legt Grundsätze und Anwendungsregeln für die Bemessung des Tanksystems bei Bau, Prüfung, Inbetriebnahme, Betrieb (unbeabsichtigter Betrieb eingeschlossen) und Außerbetriebnahme fest. Dieses Dokument gilt für alle Bauteile, die an dem Tanksystem befestigt sind und sich in Flüssigkeit, Dampf, Spülgas, Membran oder Membrantank Außenbehältern des Tanksystems befinden. Anforderungen an Zusatzausrüstungen wie Pumpen, Pumpsonden, Ventile, Messgeräte, außenliegende Treppen und Laufstege, dachmontierte Plattformen, außenliegende Rohrhalterungen usw. werden nicht behandelt. Die Anforderungen an jene Bauteile werden in den betreffenden Europäischen Normen behandelt, ihre Bemessung erfolgt nach Eurocodes, wenn zutreffend, und es besteht Übereinstimmung mit anwendbaren Sicherheitsbestimmungen.
Dieses Dokument befasst sich auch nicht mit Betriebsverfahren für Tanksysteme, sofern dies nicht zur Bestimmung der relevanten Beständigkeits und Schutzkriterien für die Tanksysteme festgelegt ist. Es legt die Mindestanforderungen an das Tanksystem, das Fundament des Tanksystems und die Schutzsysteme fest. Aus Sicht der Prozessrohrleitungen ist der Anwendungsbereich dieses Dokuments auf die folgenden Grenzen beschränkt:
a) die Stirnseite des ersten Flansches außerhalb des Tanks bei verschraubten Flanschanschlüssen;
b) die erste Schraubverbindung außerhalb des Tanks bei einer Gewindeverbindung;
c) die erste umlaufende Rohrschweißnaht außerhalb des Tanks bei einem Rohranschluss mit Schweißende ohne Flansch.
Dieses Dokument ist anwendbar für Lagertanksysteme, die für die Lagerung von Produkten vorgesehen sind, die in der dualen Phase, d. h. in der Flüssigkeits und Dampfphase, bei atmosphärischem Druck einen Siedepunkt unterhalb der Umgebungstemperatur haben. Das Gleichgewicht zwischen Flüssigkeits und Dampfphase wird aufrechterhalten durch Abkühlung des Produkts auf eine Temperatur, die dem Siedepunkt bei atmosphärischem Druck oder einer etwas niedrigeren Temperatur entspricht, verbunden mit einem leichten Überdruck im Lagertanksystem.
Der maximale Auslegungsüberdruck für die in diesem Dokument behandelten Tanksysteme ist auf 500 mbar begrenzt. Für höhere Drücke kann auf EN 13445, Teil 1 bis Teil 5, Bezug genommen werden.
Der Betriebsbereich der zu lagernden Gase liegt bei 0 °C bis −196 °C.
Die in diesem Dokument behandelten Tanksysteme werden zur Lagerung großer Volumina von Kohlenwasserstoffprodukten, Ammoniak und anderen Nicht Kohlenwasserstoffgasen mit niedrigen Siedepunkten verwendet, die allgemein als „Tiefkalt verflüssigte Gase“ (RLG, en: refrigerated liquefied gases) bezeichnet werden. In den Tanksystemen werden üblicherweise Methan, Ethan, Propan, Butan, Ethylen, Propylen, Butadien (Flüssigerdgas (LNG, en: liquefied natural gas) und Flüssiggas (LPG, en: liquefied petroleum gas) sind eingeschlossen), Ammoniak, Stickstoff, Sauerstoff und Argon gelagert.
ANMERKUNG 1 Die Eigenschaften der Gase sind in Anhang A aufgeführt.
Da für diese Tanksysteme sehr viele Größenordnungen und Gestaltungsmöglichkeiten anwendbar sind, können durch die Anforderungen dieses Dokuments nicht alle Einzelheiten abgedeckt werden, die bei Auslegung und Bau der Tanksysteme zu beachten sind. Wenn für die Auslegung einer spezifischen Tankanlage keine vollständigen Anforderungen vorliegen, obliegt die Festlegung von
Conception et fabrication de réservoirs cylindriques fond plat, verticaux, construits sur site, destinés au stockage des gaz réfrigérés, liquéfiés, dont les températures de service sont comprises entre 0 °C et -196 °C - Partie 1 : Généralités
Le présent document donne les spécifications relatives aux réservoirs verticaux, cylindriques, construits sur site, situés au-dessus du niveau du sol et dont la cuve de liquide primaire ou la barrière étanche aux liquides est en acier. La cuve de liquide secondaire, le cas échéant, peut être en acier, en béton ou être une combinaison des deux. Le domaine d'application du présent document ne couvre pas les cuves de liquide primaires en béton précontraint.
Le présent document fournit des exigences générales et spécifie des principes et des règles d'application pour la conception structurelle du réservoir pendant la construction, les essais, la mise en service, le fonctionnement (y compris en cas d'accident) et la mise hors service. Le présent document s'applique à tous les constituants du réservoir qui sont fixés et qui sont situés à l'intérieur des cuves de liquide, récipients à vapeur, cuves de gaz de purge, réservoirs à membrane ou cuves externes du réservoir à membrane. Il n'aborde pas les exigences relatives aux équipements auxiliaires tels que les pompes, les puits de pompe, les vannes, l'instrumentation, les cages d'escalier externes, les passerelles, les plateformes montées sur le toit, les supports de tuyauterie externes, etc. Les exigences relatives à ces composants sont couvertes par des Normes européennes pertinentes, être conçus structurellement conformément aux Eurocodes le cas échéant, et satisfaire aux règles de sécurité applicables. Le réservoir doit être conçu pour supporter les charges dues aux constituants auxiliaires mentionnés, y compris les deux niveaux d'actions sismiques spécifiés au paragraphe 7.1.4 du présent document.
Le présent document n'aborde pas non plus les procédures de fonctionnement des réservoirs, à moins qu'elles ne soient spécifiées pour la détermination des critères de résistance et de protection pertinents pour les réservoirs. Il spécifie les exigences de performance minimale pour le réservoir, ses fondations et les dispositifs de protection. En ce qui concerne les tuyauteries du système, le domaine d'application du présent document est défini par les limites suivantes :
a) la face de la première bride à l'extérieur du réservoir en cas de raccord à bride boulonné ;
b) le premier joint fileté à l'extérieur du réservoir en cas de raccord fileté ;
c) le premier joint soudé de tuyauterie à l'extérieur du réservoir en cas de raccord avec extrémité à souder, sans bride.
Le présent document est applicable aux réservoirs de stockage d'un produit dont la température d'équilibre liquide vapeur à pression atmosphérique est inférieure à la température ambiante. L'équilibre entre les phases liquide et vapeur est maintenu par le refroidissement du produit à une température égale ou légèrement inférieure à sa température d'ébullition à pression atmosphérique, associée à une légère surpression dans le réservoir de stockage.
La pression maximale de conception des réservoirs couverts par le présent document est limitée à 500 mbar. Pour des pressions supérieures, il est possible de consulter l'EN 13445, Parties 1 à 5.
La plage de fonctionnement associée à la température des gaz à stocker est comprise entre 0 °C et -196 °C.
Les réservoirs couverts par le présent document sont utilisés pour le stockage de grands volumes de produits hydrocarbonés, d'ammoniac et d'autres gaz non hydrocarbonés se vaporisant à basse température, généralement appelés « gaz liquéfiés réfrigérés » (GLR). Les produits typiques stockés dans les réservoirs sont : le méthane, l'éthane, le propane, le butane, l'éthylène, le propylène, le butadiène (cette gamme de produits incluant les gaz naturels liquéfiés [GNL] et les gaz de pétrole liquéfiés [GPL]), l'ammoniac, l'azote, l'oxygène et l'argon.
NOTE 1 Les propriétés des gaz sont données dans l'Annexe A.
[...]
Konstruiranje in proizvodnja na mestu postavitve grajenih pokončnih, valjastih jeklenih posod z ravnim dnom za shranjevanje hlajenih utekočinjenih plinov z delovnimi temperaturami med 0 °C in –196 °C - 1. del: Splošno
General Information
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Standards Content (Sample)
SLOVENSKI STANDARD
oSIST prEN 14620-1:2022
01-marec-2022
Konstruiranje in proizvodnja na mestu postavitve grajenih navpičnih, valjastih
jeklenih posod z ravnim dnom za shranjevanje hlajenih utekočinjenih plinov z
delovnimi temperaturami med 0 °C in –196 °C - 1. del: Splošno
Design and manufacture of site built, vertical, cylindrical, flat-bottomed tank systems for
the storage of refrigerated, liquefied gases with operating temperatures between 0 °C
and -196 °C - Part 1: General
Auslegung und Herstellung standortgefertigter, stehender, zylindrischer Flachboden-
Stahltanks für die Lagerung von tiefkalt verflüssigten Gasen bei Betriebstemperaturen
zwischen 0 °C und -196 °C - Teil 1: Allgemeines
Ta slovenski standard je istoveten z: prEN 14620-1
ICS:
23.020.10 Nepremične posode in Stationary containers and
rezervoarji tanks
oSIST prEN 14620-1:2022 en,fr,de
2003-01.Slovenski inštitut za standardizacijo. Razmnoževanje celote ali delov tega standarda ni dovoljeno.
oSIST prEN 14620-1:2022
oSIST prEN 14620-1:2022
DRAFT
EUROPEAN STANDARD
prEN 14620-1
NORME EUROPÉENNE
EUROPÄISCHE NORM
February 2022
ICS 23.020.10 Will supersede EN 14620-1:2006
English Version
Design and manufacture of site built, vertical, cylindrical,
flat-bottomed tank systems for the storage of refrigerated,
liquefied gases with operating temperatures between 0 °C
and -196 °C - Part 1: General
Auslegung und Herstellung standortgefertigter,
stehender, zylindrischer Flachboden-Stahltanks für die
Lagerung von tiefkalt verflüssigten Gasen bei
Betriebstemperaturen zwischen 0 °C und -165 °C - Teil
1: Allgemeines
This draft European Standard is submitted to CEN members for enquiry. It has been drawn up by the Technical Committee
CEN/TC 265.
If this draft becomes a European Standard, CEN members are bound to comply with the CEN/CENELEC Internal Regulations
which stipulate the conditions for giving this European Standard the status of a national standard without any alteration.
This draft European Standard was established by CEN in three official versions (English, French, German). A version in any other
language made by translation under the responsibility of a CEN member into its own language and notified to the CEN-CENELEC
Management Centre has the same status as the official versions.
CEN members are the national standards bodies of Austria, Belgium, Bulgaria, Croatia, Cyprus, Czech Republic, Denmark, Estonia,
Finland, France, Germany, Greece, Hungary, Iceland, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, Netherlands, Norway,
Poland, Portugal, Republic of North Macedonia, Romania, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland, Turkey and
United Kingdom.
Recipients of this draft are invited to submit, with their comments, notification of any relevant patent rights of which they are
aware and to provide supporting documentation.
Warning : This document is not a European Standard. It is distributed for review and comments. It is subject to change without
notice and shall not be referred to as a European Standard.
EUROPEAN COMMITTEE FOR STANDARDIZATION
COMITÉ EUROPÉEN DE NORMALISATION
EUROPÄISCHES KOMITEE FÜR NORMUNG
CEN-CENELEC Management Centre: Rue de la Science 23, B-1040 Brussels
© 2022 CEN All rights of exploitation in any form and by any means reserved Ref. No. prEN 14620-1:2022 E
worldwide for CEN national Members.
oSIST prEN 14620-1:2022
prEN 14620-1:2022 (E)
Contents Page
European foreword . 3
1 Scope . 5
2 Normative references . 6
3 Terms and definitions . 7
4 Concept selection . 13
5 Quality assurance and quality control . 24
6 Health, safety and environment plan . 24
7 General design considerations. 25
8 Inspection and maintenance. 40
9 Marking and documentation . 40
Annex A (informative) Physical properties of gases . 44
Annex B (normative) Design information . 45
B.1 Information to be specified by the purchaser . 45
B.2 Information to be provided by tank system contractor. 46
B.3 Information to be agreed between the purchaser and the contractor . 46
Annex C (normative) Seismic analysis . 47
C.1 General. 47
C.2 Analysis of the tank system structure . 47
C.3 Modelling of the tank system structure and fluid . 47
C.4 Response of the tank system structure . 48
C.5 Acceptance criteria and limits . 49
C.6 Vertical anchors . 50
Annex D (informative) Tank heating system . 51
Annex E (informative) Recommendations for geotechnical investigations and seismic hazard
evaluation . 53
E.1 General. 53
E.2 Purpose of the investigation . 53
E.3 Suggested minimum soil investigation . 54
E.4 Testing . 56
E.5 Soil data analysis and geotechnical report . 57
E.6 Site-specific seismicity hazard investigation . 58
Bibliography . 60
oSIST prEN 14620-1:2022
prEN 14620-1:2022 (E)
European foreword
This document (prEN 14620-1:2022) has been prepared by Technical Committee CEN/TC 265 “Metallic
tanks for the storage of liquids”, the secretariat of which is held by BSI.
This document is currently submitted to the CEN Enquiry.
This document will supersede EN 14620-1:2006.
In comparison with the previous edition, the following technical modifications have been made:
— general editorial update;
— standard boundaries are defined in the scope statement and applicability extended to −196°C;
— terms and definitions adjusted;
— normative references updated;
— description of various tank system concepts updated;
— risk assessment requirements improved;
— liquid levels and capacities clarified;
— foundation requirements updated and allowable foundation settlement requirements added;
— secondary containment design requirements clarified;
— earthquake requirements clarified;
— new chapter on marking and documentation added;
— new informative annex with recommendation for geotechnical investigation and seismic hazard
evaluation added.
EN 14620, Design and manufacture of site built, vertical, cylindrical, flat-bottomed tank systems for the
storage of refrigerated, liquefied gases with operating temperatures between 0 °C and −196 °C, consists of
the following parts:
— Part 1: General;
— Part 2: Metallic components;
— Part 3: Concrete components;
— Part 4: Insulation components;
— Part 5: Testing, drying, purging and cool-down;
oSIST prEN 14620-1:2022
prEN 14620-1:2022 (E)
— Part 6: Specific requirements for the design and construction of tank systems for the storage of
liquefied oxygen (LOX), liquefied nitrogen (LIN) and liquefied argon (LAR); and
— Part 7: Specific requirements for the design and construction of tank systems for the storage of
liquefied anhydrous ammonia.
oSIST prEN 14620-1:2022
prEN 14620-1:2022 (E)
1 Scope
This document is a specification for vertical, cylindrical tank systems, built on site, above ground and of
which either the primary liquid container or the liquid tight barrier is made of steel. The secondary liquid
container, if applicable, can be of steel or of concrete or a combination of both. A primary liquid container
made of pre-stressed concrete is excluded from the scope of this document.
This document specifies principles and application rules for the structural design of the “containment”
during construction, testing, commissioning, operation (accidental included), and decommissioning. It
does not address the requirements for ancillary equipment such as pumps, pumpwells, valves, piping,
instrumentation, staircases etc. unless they can affect the structural design of the tank systems. This
document also does not address tank system operating procedures.
This document applies to all components located within, attached to and providing access to the tank
system. It defines minimum performance requirements for the tank system, tank system foundation and
protection systems. From a process piping standpoint, the scope of this document is limited to the
following boundaries:
a) the face of the first flange outside of the tank in bolted flanged connection;
b) the first threaded joint outside of the tank in threaded connection;
c) the first circumferential pipe welded joint outside of the tank in welding-end pipe connection, which
does not have a flange.
This document applies to storage tank systems designed to store products, having an atmospheric boiling
point below ambient temperature, in a dual phase, i.e. liquid and vapour. The equilibrium between liquid
and vapour phases being maintained by cooling down the product to a temperature equal to, or just
below, its atmospheric boiling point in combination with a slight overpressure in the storage tank system.
The maximum design pressure of the tank systems covered by this document is limited to 500 mbar. For
higher pressures, reference can be made to EN 13445, Parts 1 to 5.
The operating range of the gases to be stored is between 0 °C and −196°C.
The tank systems covered by this document are used to store large volumes of hydrocarbon products,
ammonia and other non-hydrocarbon gases with low temperature boiling points, generally called
“Refrigerated Liquefied Gases” (RLGs). Typical products stored in the tank systems are: methane, ethane,
propane, butane, ethylene, propylene, butadiene (this range includes the Liquefied Natural Gas (LNG’s)
and Liquefied Petroleum Gas (LPG’s)), ammonia, nitrogen, oxygen and argon.
NOTE Properties of the gases are given in Annex A.
The requirements of this document cannot cover all details of design and construction because of the
variety of sizes and configurations that may be employed. Where complete requirements for a specific
design are not provided, the intention is for the designer, subject to approval of the purchaser's
authorized representative, to provide design and details that are as safe as those laid out in this document.
This document specifies general requirements for the tank system concept, selection and general design
considerations.
The requirements specific for liquid nitrogen, liquid oxygen and liquid argon are covered in
prEN 14620-6 and requirements specific to anhydrous ammonia are covered in EN 14620-7. In case of
conflict between requirements of this Part and requirements on the same subject listed in prEN 14620-6
and EN 14620-7, the requirements set forth in prEN 14620-6 and EN 14620-7 take precedence.
oSIST prEN 14620-1:2022
prEN 14620-1:2022 (E)
2 Normative references
The following documents are referred to in the text in such a way that some or all of their content
constitutes requirements of this document. For dated references, only the edition cited applies. For
undated references, the latest edition of the referenced document (including any amendments) applies.
EN 1473:2021, Installation and equipment for liquefied natural gas - Design of onshore installations
EN 1990, Eurocode - Basis of structural design
EN 1991-1-3, Eurocode 1 - Actions on structures - Part 1-3: General actions - Snow loads
EN 1991-1-4, Eurocode 1: Actions on structures - Part 1-4: General actions -
...
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